Annotation of src/etc/netstart, Revision 1.139
1.1 deraadt 1: #!/bin/sh -
2: #
1.139 ! mpi 3: # $OpenBSD: netstart,v 1.138 2013/03/20 15:26:28 todd Exp $
1.101 millert 4:
5: # Strip comments (and leading/trailing whitespace if IFS is set)
6: # from a file and spew to stdout
7: stripcom() {
1.108 todd 8: local _l
1.110 todd 9: [[ -f $1 ]] || return
1.108 todd 10: while read _l; do
11: [[ -n ${_l%%#*} ]] && echo $_l
12: done<$1
1.101 millert 13: }
1.45 millert 14:
1.83 miod 15: # Start the $1 interface
16: ifstart() {
1.84 deraadt 17: if=$1
1.83 miod 18: # Interface names must be alphanumeric only. We check to avoid
19: # configuring backup or temp files, and to catch the "*" case.
1.137 rpe 20: [[ $if != +([[:alpha:]])+([[:digit:]]) ]] && return
1.83 miod 21:
1.119 deraadt 22: file=/etc/hostname.$if
1.121 todd 23: if ! [ -f $file ]; then
24: echo "netstart: $file: No such file or directory"
25: return
26: fi
1.123 sthen 27: # Not using stat(1), we can't rely on having /usr yet
28: set -A stat -- `ls -nL $file`
29: if [ "${stat[0]#???????} ${stat[2]} ${stat[3]}" != "--- 0 0" ]; then
1.119 deraadt 30: echo "WARNING: $file is insecure, fixing permissions"
1.122 sthen 31: chmod -LR o-rwx $file
32: chown -LR root.wheel $file
1.119 deraadt 33: fi
1.136 rpe 34: # Check for ifconfig'able interface.
35: (ifconfig $if || ifconfig $if create) >/dev/null 2>&1 || return
1.83 miod 36:
37: # Now parse the hostname.* file
38: while :; do
39: if [ "$cmd2" ]; then
40: # We are carrying over from the 'read dt dtaddr'
41: # last time.
42: set -- $cmd2
43: af="$1" name="$2" mask="$3" bcaddr="$4" ext1="$5" cmd2=
44: # Make sure and get any remaining args in ext2,
45: # like the read below
46: i=1
1.126 simon 47: while [ $i -lt 6 -a -n "$1" ]; do shift; let i=i+1; done
1.83 miod 48: ext2="$@"
49: else
50: # Read the next line or exit the while loop.
51: read af name mask bcaddr ext1 ext2 || break
52: fi
53: # $af can be "dhcp", "up", "rtsol", an address family,
54: # commands, or a comment.
55: case "$af" in
56: "#"*|"") # skip comments and empty lines
57: continue
58: ;;
59: "!"*) # parse commands
60: cmd="${af#*!} ${name} ${mask} ${bcaddr} ${ext1} ${ext2}"
61: ;;
62: "dhcp")
63: [ "$name" = "NONE" ] && name=
64: [ "$mask" = "NONE" ] && mask=
65: [ "$bcaddr" = "NONE" ] && bcaddr=
1.106 todd 66: cmd="ifconfig $if $name $mask $bcaddr $ext1 $ext2 down"
67: cmd="$cmd;dhclient $if"
1.110 todd 68: dhcpif="$dhcpif $if"
1.83 miod 69: ;;
70: "rtsol")
1.84 deraadt 71: rtsolif="$rtsolif $if"
1.106 todd 72: cmd="ifconfig $if $name $mask $bcaddr $ext1 $ext2 up"
1.83 miod 73: ;;
74: *)
75: read dt dtaddr
76: if [ "$name" = "alias" ]; then
77: # perform a 'shift' of sorts
78: alias=$name
79: name=$mask
80: mask=$bcaddr
81: bcaddr=$ext1
82: ext1=$ext2
83: ext2=
84: else
85: alias=
86: fi
1.114 todd 87: cmd="ifconfig $if $af $alias $name"
1.83 miod 88: case "$dt" in
89: dest)
90: cmd="$cmd $dtaddr"
91: ;;
1.130 todd 92: *)
1.83 miod 93: cmd2="$dt $dtaddr"
94: ;;
95: esac
96: case $af in
97: inet)
1.128 todd 98: if [ ! -n "$name" ]; then
99: echo "/etc/hostname.$if: inet alone is invalid"
100: return
101: fi
1.83 miod 102: [ "$mask" ] && cmd="$cmd netmask $mask"
103: if [ "$bcaddr" -a "X$bcaddr" != "XNONE" ]; then
104: cmd="$cmd broadcast $bcaddr"
105: fi
106: ;;
1.128 todd 107: inet6)
108: if [ ! -n "$name" ]; then
109: echo "/etc/hostname.$if: inet6 alone is invalid"
110: return
111: fi
112: [ "$mask" ] && cmd="$cmd prefixlen $mask"
1.83 miod 113: cmd="$cmd $bcaddr"
114: ;;
115: *)
116: cmd="$cmd $mask $bcaddr"
117: ;;
118: esac
1.139 ! mpi 119: cmd="$cmd $ext1 $ext2"
1.83 miod 120: ;;
121: esac
122: eval "$cmd"
1.84 deraadt 123: done < /etc/hostname.$if
1.83 miod 124: }
125:
1.105 todd 126: # Start multiple:
127: # start "$1" interfaces in order or all interfaces if empty
128: # don't start "$2" interfaces
129: ifmstart() {
130: for sif in ${1:-ALL}; do
131: for hn in /etc/hostname.*; do
132: # Strip off /etc/hostname. prefix
133: if=${hn#/etc/hostname.}
134: test "$if" = "*" && continue
1.113 david 135:
1.105 todd 136: # Skip unwanted ifs
1.113 david 137: s=""
1.105 todd 138: for xf in $2; do
139: test "$xf" = "${if%%[0-9]*}" && s="1" && break
140: done
141: test "$s" = "1" && continue
142:
143: # Start wanted ifs
144: test "$sif" = "ALL" -o \
145: "$sif" = "${if%%[0-9]*}" \
146: && ifstart $if
147: done
148: done
149: }
150:
1.81 angelos 151: # Re-read /etc/rc.conf
152: . /etc/rc.conf
1.1 deraadt 153:
1.83 miod 154: # If we were invoked with a list of interface names, just reconfigure these
155: # interfaces (or bridges) and return.
1.135 rpe 156: if [[ $1 == autoboot ]]; then
1.83 miod 157: shift
158: fi
159: if [ $# -gt 0 ]; then
160: while [ $# -gt 0 ]; do
1.127 deraadt 161: ifstart $1
1.83 miod 162: shift
163: done
164: return
165: fi
166:
167: # Otherwise, process with the complete network initialization.
168:
1.1 deraadt 169: # /etc/myname contains my symbolic name
1.87 henning 170: if [ -f /etc/myname ]; then
1.100 millert 171: hostname=`stripcom /etc/myname`
1.87 henning 172: hostname $hostname
173: else
174: hostname=`hostname`
1.4 dm 175: fi
176:
1.131 sobrado 177: # Set the address for the loopback interface. Bringing the interface up,
178: # automatically invokes the IPv6 address ::1.
1.129 henning 179: ifconfig lo0 inet 127.0.0.1/8
1.24 kstailey 180:
1.54 itojun 181: if ifconfig lo0 inet6 >/dev/null 2>&1; then
182: # IPv6 configurations.
183: ip6kernel=YES
184:
1.83 miod 185: # Disallow link-local unicast dest without outgoing scope identifiers.
1.98 deraadt 186: route -qn add -inet6 fe80:: -prefixlen 10 ::1 -reject > /dev/null
1.66 itojun 187:
1.83 miod 188: # Disallow site-local unicast dest without outgoing scope identifiers.
1.66 itojun 189: # If you configure site-locals without scope id (it is permissible
190: # config for routers that are not on scope boundary), you may want
191: # to comment the line out.
1.98 deraadt 192: route -qn add -inet6 fec0:: -prefixlen 10 ::1 -reject > /dev/null
1.66 itojun 193:
1.83 miod 194: # Disallow "internal" addresses to appear on the wire.
1.98 deraadt 195: route -qn add -inet6 ::ffff:0.0.0.0 -prefixlen 96 ::1 -reject > /dev/null
1.66 itojun 196:
1.83 miod 197: # Disallow packets to malicious IPv4 compatible prefix.
1.98 deraadt 198: route -qn add -inet6 ::224.0.0.0 -prefixlen 100 ::1 -reject > /dev/null
199: route -qn add -inet6 ::127.0.0.0 -prefixlen 104 ::1 -reject > /dev/null
200: route -qn add -inet6 ::0.0.0.0 -prefixlen 104 ::1 -reject > /dev/null
201: route -qn add -inet6 ::255.0.0.0 -prefixlen 104 ::1 -reject > /dev/null
1.66 itojun 202:
1.83 miod 203: # Disallow packets to malicious 6to4 prefix.
1.98 deraadt 204: route -qn add -inet6 2002:e000:: -prefixlen 20 ::1 -reject > /dev/null
205: route -qn add -inet6 2002:7f00:: -prefixlen 24 ::1 -reject > /dev/null
206: route -qn add -inet6 2002:0000:: -prefixlen 24 ::1 -reject > /dev/null
207: route -qn add -inet6 2002:ff00:: -prefixlen 24 ::1 -reject > /dev/null
1.115 itojun 208:
209: # Disallow packets without scope identifier.
210: route -qn add -inet6 ff01:: -prefixlen 16 ::1 -reject > /dev/null
211: route -qn add -inet6 ff02:: -prefixlen 16 ::1 -reject > /dev/null
1.66 itojun 212:
213: # Completely disallow packets to IPv4 compatible prefix.
214: # This may conflict with RFC1933 under following circumstances:
215: # (1) An IPv6-only KAME node tries to originate packets to IPv4
1.77 deraadt 216: # compatible destination. The KAME node has no IPv4 compatible
1.66 itojun 217: # support. Under RFC1933, it should transmit native IPv6
218: # packets toward IPv4 compatible destination, hoping it would
219: # reach a router that forwards the packet toward auto-tunnel
220: # interface.
1.77 deraadt 221: # (2) An IPv6-only node originates a packet to an IPv4 compatible
1.66 itojun 222: # destination. A KAME node is acting as an IPv6 router, and
223: # asked to forward it.
1.77 deraadt 224: # Due to rare use of IPv4 compatible addresses, and security issues
1.66 itojun 225: # with it, we disable it by default.
1.98 deraadt 226: route -qn add -inet6 ::0.0.0.0 -prefixlen 96 ::1 -reject > /dev/null
1.56 itojun 227:
228: rtsolif=""
1.54 itojun 229: else
230: ip6kernel=NO
231: fi
232:
1.105 todd 233:
234: # Configure all the non-loopback interfaces which we know about, but
1.127 deraadt 235: # do not start interfaces which must be delayed. Refer to hostname.if(5)
1.132 mpf 236: ifmstart "" "trunk svlan vlan carp gif gre pfsync pppoe tun bridge"
1.56 itojun 237:
1.118 brad 238: # The trunk interfaces need to come up first in this list.
1.132 mpf 239: # The (s)vlan interfaces need to come up after trunk.
1.118 brad 240: # Configure all the carp interfaces which we know about before default route.
1.132 mpf 241: ifmstart "trunk svlan vlan carp"
1.118 brad 242:
1.56 itojun 243: if [ "$ip6kernel" = "YES" -a "x$rtsolif" != "x" ]; then
244: fw=`sysctl -n net.inet6.ip6.forwarding`
245: ra=`sysctl -n net.inet6.ip6.accept_rtadv`
246: if [ "x$fw" = "x0" -a "x$ra" = "x1" ]; then
1.57 itojun 247: echo "IPv6 autoconf:$rtsolif"
1.56 itojun 248: rtsol $rtsolif
249: else
250: echo "WARNING: inconsistent config - check /etc/sysctl.conf for IPv6 autoconf"
251: fi
1.57 itojun 252: fi
1.102 mcbride 253:
1.138 todd 254: # Look for default routes in /etc/mygate.
1.110 todd 255: [[ -z $dhcpif ]] && stripcom /etc/mygate | while read gw; do
256: [[ $gw == @(*:*) ]] && continue
257: route -qn delete default > /dev/null 2>&1
258: route -qn add -host default $gw && break
259: done
260: [[ -z $rtsolif ]] && stripcom /etc/mygate | while read gw; do
261: [[ $gw == !(*:*) ]] && continue
262: route -qn delete -inet6 default > /dev/null 2>&1
263: route -qn add -host -inet6 default $gw && break
264: done
1.44 deraadt 265:
1.48 niklas 266: # Multicast routing.
267: #
268: # The routing to the 224.0.0.0/4 net is setup according to these rules:
269: # multicast_host multicast_router route comment
270: # NO NO -reject no multicast
271: # NO YES none installed daemon will run
272: # YES/interface NO -interface YES=def. iface
273: # Any other combination -reject config error
1.112 reyk 274: route -qn delete 224.0.0.0/4 > /dev/null 2>&1
1.48 niklas 275: case "$multicast_host:$multicast_router" in
276: NO:NO)
1.91 deraadt 277: route -qn add -net 224.0.0.0/4 -interface 127.0.0.1 -reject > /dev/null
1.67 deraadt 278: ;;
1.48 niklas 279: NO:YES)
280: ;;
281: *:NO)
1.112 reyk 282: maddr=`if [ "$multicast_host" = "YES" ]; then
1.91 deraadt 283: ed -s '!route -qn show -inet' <<EOF
1.48 niklas 284: /^default/p
285: EOF
286: else
287: ed -s "!ifconfig $multicast_host" <<EOF
288: /^ inet /p
289: EOF
1.112 reyk 290: fi 2> /dev/null`
291: if [ "X${maddr}" != "X" ]; then
292: set $maddr
293: route -qn add -net 224.0.0.0/4 -interface $2 > /dev/null
294: else
295: route -qn add -net 224.0.0.0/4 -interface \
296: 127.0.0.1 -reject > /dev/null
297: fi
1.67 deraadt 298: ;;
1.48 niklas 299: *:*)
300: echo 'config error, multicasting disabled until rc.conf is fixed'
1.91 deraadt 301: route -qn add -net 224.0.0.0/4 -interface 127.0.0.1 -reject > /dev/null
1.67 deraadt 302: ;;
1.48 niklas 303: esac
1.83 miod 304:
1.105 todd 305:
1.125 jdixon 306: # Configure PPPoE, GIF, GRE and TUN interfaces, delayed because they require
307: # routes to be set. TUN might depend on PPPoE, and GIF or GRE may depend on
308: # either of them.
1.127 deraadt 309: ifmstart "pppoe tun gif gre bridge"
1.92 deraadt 310:
1.99 itojun 311: # reject 127/8 other than 127.0.0.1
1.92 deraadt 312: route -qn add -net 127 127.0.0.1 -reject > /dev/null
1.116 david 313:
314: if [ "$ip6kernel" = "YES" ]; then
315: # this is to make sure DAD is completed before going further.
1.124 markus 316: count=0
317: while [ $((count++)) -lt 10 -a "x"`sysctl -n net.inet6.ip6.dad_pending` != "x0" ]; do
318: sleep 1
319: done
1.116 david 320: fi